.embed-responsive-16by9.masks{
  z-index: 99;
}
.breadcrumb.open-course-breadcrumb{
  margin: -30px 0 0;
  background: transparent;
  padding: 25px 0 20px;
}
.open-course-header{
  margin-bottom: 15px;
  position: relative;
  z-index: 0;
  .black-mask {
    position: absolute;
    left: 0;
    right: 0;
    top:0;
    bottom:0;
    background-color: #000;
  }
  >.row {
    margin: 0;
  }
} 
.open-course-detail-main {
  width: 45%;
  float: left;
  img {
    width: 120px;
    max-width: 120px;
    height: 68px;
    .border-radius(2px);
  }
  .title {
    font-size: 20px;
    color: @gray-darker;
    .text-overflow; 
  }
  .metas {
    span {
      font-size: 15px;
      color: @gray;
      &:first-child{
        margin-right: 30px;
      }
    }
  }
  .media-body {
    padding: 8px 0;
  }
}
.open-course-detail-operation {
  float: left;
  width: 55%;
  padding: 20px 0;
  @media(max-width:@screen-sm-max) {
    width: 100%;
  }
  .operation-list{
    display: inline-block;
    width: 24%;
    text-align: center;
    border-right: 1px solid #f1f1f1;
    &:last-child{
      border-right: none;
    }
    @media(max-width:@screen-sm-max) {
      width: 32%;
    }
  }
  .operation-list.no-border{
    @media(max-width:@screen-sm-max) {
      border-right: 1px solid transparent;
    }
  }
  .operation-img.operation-share a{
    display: inline-block;
  }
  .operation-img{
    display: inline-block;
    width: 36px;
    height: 36px;
    color: #fff;
    border-radius: 50%;
    text-align: center;
    margin-right: 8px;
    background: #919191;
    .es-transition;
    a {
      color: #fff;
      display: block;
    }
    i {
      font-size: 18px;
      line-height: 36px;
    }
    .qrcode-popover.top .qrcode-content{
      left: -77px;
      top: -247px;
    }
  }
  .operation-zan.active,
  .operation-zan:hover {
    background: #e85749;
    .es-transition;
  }
  .operation-share:hover{
    background: #83d460;
    .es-transition;
  }
  .operation-collection.active,
  .operation-collection:hover {
    background: #53c3f5;
    .es-transition;
  }
  .operation-code:hover {
    background: #ff8a0c;
    .es-transition;
  }
}
.open-course-detail {
  position: relative;
  .btn-setting{
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 0 3px;
  }
}
.open-course-container {
  padding: 0;
}
.open-course-wechat-preview .open-course-container {
  max-width: 740px;
  .open-course-wechat-qrcode {
    position: fixed;
    right: 50%;
    top: 100px;
    background: #fff;
    margin-right: -585px;
   img {
    width: 200px;
    height: 200px;
   }
  }
}
.open-course-panel {
  margin: 15px 0;
  border-color: transparent;
  .border-radius(0);
  .panel-heading {
    border:none;
    &:before {
      content: '';
      display: inline-block;
      width: 4px;
      height: 20px;
      background: @brand-primary;
      vertical-align: sub;
      margin-right: 6px;
    }
  }
}
.open-course-intro img {
  max-width: 100%;
}
.open-course-recommend {
  margin-bottom: 15px;
  &:last-child {
    margin-bottom: 0;
  }
  .open-course-img {
    float: left;
    width: 30%;
    margin-right: 20px;
  }
  .open-course-content {
    float: left;
    width: 63%;
  }
  .title {
    margin: 8px 0 5px;
    a {
      .text-overflow;
      color:@gray-darker;
    }
  }
  .metas {
    font-size: 12px;
    color: @gray;
  }
}

.open-course-img {
  float: left;
  width: 15%;
}
.open-course-comment {
  float: left;
  width: 84%;
  margin: 0 auto;
  textarea{
    margin: 0 auto;
  }
  textarea.form-control-o {
     background-color: transparent;
     border:1px solid #f5f5f5;
  }
}
//列表
.es-open-course-list {
  .course-item {
    .title {
      max-width: 58%;
      display: inline-block;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
      word-wrap: normal;
      font-size: 16px;
      margin-top: 20px;
      padding: 0 15px;
      a {
        @media (max-width:@screen-xs-max) {
          font-size: 12px;
        }
      }
      @media (max-width:@screen-xs-max) {
        margin-top: 5px;
        display: block; 
        max-width: 100%;
      }
    }
    .course-img {
      .img-responsive {
        padding: 0;
      }
      .mask {
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        background:#000;
        background: rgba(0, 0, 0, 0.5);
        color: #fff;
        padding: 10px;
        @media (max-width:@screen-xs-max) {
          font-size: 12px;
          padding: 6px;
        }
      }
    } 
    .metas {
      padding: 22px 15px;
      @media (max-width:@screen-xs-max) {
        padding: 10px 15px;
        font-size: 12px;  
        width: 100%;
      }
    }
  } 
}

.open-course-title {
  font-size: 18px;
  margin-bottom: 10px;
  .text-overflow; 
}
.open-course-mobile-title {
  font-size: 20px;
  margin-bottom: 0;
  padding: 10px 10px 0;
  background: #fff;
  margin-top: 15px;
  p {
    font-size: 16px;
  }
}
.open-course-mask {
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    background:#000;
    background-color: rgba(0, 0, 0, .9);
    .mask-content {
      position: absolute;
      left: 50%;
      top: 50%;
      width: 330px;
      height: 160px;
      margin-top: -80px;
      margin-left: -165px;
      text-align: center;
      h2 {
        color: #fff;
        font-size: 20px;
        margin-bottom: 20px;
      }
      .mask-btn {
        font-size: 20px;
        .border-radius(4px);
        .es-icon {
          font-size: 23px;
          padding-left: 10px;
        }
      }
    }
    .open-course-content{
      background: transparent;
      text-align: center;
      img{
        position: absolute;
        right: 0;
        top:0;
      }
      .metas{
        position: absolute;
        left: 50%;
        margin-left: -142px;
        top: 156px;
      }
      p{
        font-size: 22px;
        color: #fff;
      }
      .open-course-btn{
        border:1px solid #fff;
        color: #fff;
        .border-radius(0);
        margin-top: 10px;
      }
    }
  }
.open-course-views.open-course-wechat-views{
  padding-top: 40px;
}
.open-course-views {
  position: relative;
  padding: 0;
  background-color: #000;
  height: 500px;
    @media(max-width:@screen-xs-max) {
      height: 300px;
    }
  .mask-img{
    width: 100%;
    padding-top: 10px;
    @media(max-width:@screen-md-max) {
      padding-top: 50px;
    }
    @media(max-width:@screen-sm-max) {
      padding: 0;
    }
  }
  .lesson-content { 
    height: 100%;
  }
  
  .mask {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    background:#000;
    background-color: rgba(0, 0, 0, .9);
    z-index: 999;
    .mask-content {
      position: absolute;
      left: 50%;
      top: 50%;
      width: 330px;
      height: 160px;
      margin-top: -80px;
      margin-left: -165px;
      text-align: center;
      @media(max-width:@screen-sm-max) {
        margin-top: -60px;
      }
      h2 {
        color: #fff;
        font-size: 20px;
        margin-bottom: 20px;
      }
      .mask-content__tip {
        color: #fff;
      }
      .mask-btn {
        font-size: 20px;
        .border-radius(4px);
        .es-icon {
          font-size: 23px;
          padding-left: 10px;
        }
      }
    }
    .open-course-content{
      background: transparent;
      text-align: center;
      img{
        position: absolute;
        right: 0;
        top:0;
      }
      .metas{
        position: absolute;
        left: 50%;
        margin-left: -142px;
        top: 156px;
      }
      p{
        font-size: 22px;
        color: #fff;
      }
      .open-course-btn{
        border:1px solid #fff;
        color: #fff;
        .border-radius(0);
        margin-top: 10px;
      }
    }
  }
  .modal-dialog {
    .modal-img {
      float: left;
      width: 33.3%;
      padding: 0 8px;
      img {
        margin-bottom: 12px;
        .border-radius(4px);
      }
      .title{
        .text-overflow;
        color: @gray-darker;
      }
    }
    .modal-footer .es-share{
      .dropdown-menu {
        left: 96px;
      }
      a {
        color: #fff;
        font-size: 14px;
      }
      .share-btn {
        background-color: #70d445;
        border-color: #70d445;
        &:hover {
          background-color: darken(#70d445, 10%);
        }
      }
      .next-btn {
        background-color: #ff8a0c;
        border-color: #ff8a0c;
        &:hover {
          background-color: darken(#ff8a0c, 10%);
        }
      }
    }
  }
}
.open-course-mobile-views{
  background: #fff;
  padding: 0 10px 10px;
}
.open-course-tab {
  height: 500px;
  background-color: #212121;
  color: #ffffff;
  padding: 0;
  @media(max-width:@screen-sm-max) {
    height: auto; 
  }
  ul {
    padding: 0;
    margin-bottom: 0;
    list-style-type: none;
    .tab-header {
      float: left;
      width: 50%;
      padding: 20px 0;
      font-size: 16px;
      text-align: center;
      cursor: pointer;
      background-color: @gray-darker;
      &.active, &:hover {
        background-color: #212121;
        .es-transition;
      }
      @media(max-width:@screen-sm-max) {
        padding: 15px 0;
        font-size: 14px;
      }
    }
  }
  .tab-recommand {
    padding: 10px 20px 10px 15px;
    &:first-child {
      padding: 15px 20px 10px 15px;
    }
    img {
      float: left;
      width: 118px;
      .border-radius(4px);
      @media(max-width:@screen-md-max) {
        width: 100px;
      }
    }
    .open-course-info {
      margin-left: 138px;
      @media(max-width:@screen-md-max) {
        margin-left: 108px;
      }
      .title {
        display: inline-block;
        padding-bottom: 8px;
        max-height: 42px;
        line-height: 21px;
        font-size: 12px;
        overflow: hidden;
        text-overflow: ellipsis;
        color: rgba(255, 255, 255, .8);
        &:hover {
          color: @brand-primary;
          .es-transition;
        }
      }
      .num {
        color: rgba(255, 255, 255, 0.5);
        overflow: hidden;
        height: 21px;
      }
    }
  }
  .tab-live a {
    display: block;
    padding: 14px 50px 14px 20px;
    color: rgba(255, 255, 255, 0.7);
    cursor: pointer;
    overflow: hidden;
    word-wrap: normal;
    white-space: nowrap;
    text-overflow: ellipsis;
    &:hover,&:active,&.active {
      color: rgba(255, 255, 255, 1);
      background-color: @brand-primary;
    }
  }
}
.open-course-mobile-tab {
  background: #fff;
  margin-bottom: 20px;
  ul {
    .tab-header {
      background-color: #fff;
      border-bottom:2px solid @gray-dark;
      color: @gray-dark;
      font-size: 13px;
    }
    .tab-header.active {
      background-color: #fff;
      border-bottom: 2px solid @brand-primary;
      color: @brand-primary;
    }
  }
}
.open-course-detail .intro-img {
  width: 186px;
  display: block;
  margin-top: 10px;
}
.open-course-teacher {
  img {
    // display: block;
    margin: 0 auto;
  }
  .intro {
    line-height: 20px;
    text-align: left;
    font-size: 12px;
    color: @gray-darker;
    height: 70px;
    overflow: hidden;
  }
}
.course-comment {
  padding: 15px 20px;
  .media {
    margin-bottom: 40px;
    margin-top: 20px;
    &:first-child {
      margin-bottom: 20px;
      border-bottom: 1px solid @gray-lighter;
    }
  }
}
.open-starttime {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  color: #fff;
  height: 30px;
  line-height: 30px;
  padding-left: 10px;
  background-color: #000;
  background-color:rgba(0,0,0,0.5);

  @media (max-width:@screen-md-max){
    font-size: 12px;
  }
}
//频道页
.open-course-list {
  // background-color: #f5f8fa;
  .course-block {
    padding: 20px;
    border:1px solid #e4ecf3;
    background-color: #fff;
    margin-bottom: 20px;
    @media(max-width:@screen-sm-max) {
      width: 48%;
      float: left;
      margin: 0 1% 20px 1%;
      padding: 0;
    }
    .course-img {
      position: relative;
      float: left;
      width: 35%;
      img {
        width: 100%;
      }
      @media(max-width:@screen-sm-max) {
        float: none;
        width: 100%;
      }
    }
    .open-course-content {
      float: left;
      width: 65%;
      padding-left: 20px;
      // padding-right: 20px;
      @media(max-width:@screen-sm-max) {
        float: none;
        width: 100%;
        padding: 0 10px 10px 10px;
        .title {
          padding-top: 10px;
        }
      }
      @media(max-width:@screen-xs-max) {
        padding: 0 5px 5px 5px;
      }
      .title {
        margin-bottom: 10px;
        a {
          font-size: 22px;
          vertical-align: middle;
          @media(max-width:@screen-sm-max) {
            font-size: 14px;
          }
        }
      }
    }
    .open-course-intro {
      margin-bottom: 20px;
      // line-height: 24px;
      height: 80px;
      overflow: hidden;
      color: @gray;
      @media(max-width:@screen-md-max) {
        height: 60px;
        margin-bottom: 10px;
      }
    }
    .metas {
      line-height: 34px;
      @media(max-width:@screen-xs-max) {
        line-height: 20px;
      }
      .btn {
        @media(min-width:@screen-sm-min) and (max-width:@screen-md-max) {
          font-size: 12px;
        }
      }
      span {
        margin-right: 15px;
        color: @gray-medium;
        font-size: 12px;
        @media(max-width:@screen-sm-max) {
          margin-right: 5px;
        }
        .es-icon {
          margin-right: 5px;
          font-size: 20px;
          @media(max-width:@screen-xs-max) {
            font-size: 16px;
          }
        } 
      }
    }
  }
  .section-more-btn {
    margin: 40px 0 70px 0;
  }
  .tags {
    position: absolute;
    top: 0;
    left: 10px;
    .tag-open-live {
      display: inline-block;
      width: 40px;
      height: 50px;
      // background: url(@{img-src}tag_open_live.png) no-repeat;
    }
  }
}

.open-course-sms-form{
  .help-block{
    margin-top: 47px;
    margin-left: 200px;
    @media(max-width:@screen-sm-max){
      margin:0;
    }
  }
}
.open-course-form-control{
  @media(max-width:@screen-sm-max){
    width: 67%;
    display: inline-block;
  }
}
.open-course-form-btn{
  @media(max-width:@screen-sm-max){
    width: 30%;
    display: inline-block;
  }
}




